Indicator for door-locks.



Elm-884,996. PATENTED APRQ14, 190s.

. GQVOIGHT & 0. J. .OALEY. INDICATOR FOR DOOR-LOOKS.

APPLICATION FILED NOV. 29, 1907.

UNITED STATES -P TENT OFFICE. I

HENRY G. VOIGHT AND CHARLES J. CALEY, OF NEW BRITAIN, CONNECTICUT,ASSIGNORS TO RUSSELL & ERWIN MANUFACTURING COMPANY, OF NEW BRITAIN,CONNECTICUT, A

I CORPORATION OF CONNECTICUT.

INDICATOR FOR DOOR-LOCKS.

Specification of Letters Patent.

Patented April 14:, 1908.

To all whom it may concern:

Be it known that we, HENRY G. Vororrr and CHARLES J. CALEY, citizens ofthe United States, residing at New Britain, county of Hartford,Connecticut, have invented certain new and useful Improvements inIndicators for Door-Locks, of which the following is a full, clear, andexact description.

This invention relates to improvements in indicators for door locks, toinform, by the sense of touch, any person desiring to enter a room,whether the door has been locked from the inside. In this connection, itis of particular value when ap lied to corridor doors where only a dimlight prevails. It has great value in connection with hotel bedroomdoors, where an effort to open the door of an occupied room mightdisturb the occu-- pant.

In the drawings Figure 1 is a section of a door fitted with our improvedindicating device. Fig. 2 is a view of the inner side of the indicator.Fig. 3 is a longitudinal section of the same. Fig. 4 is a front view ofthe same. Fig. 5 is a view of the frame of the indicator, with the otherparts detached. Fig. 6 is a side view of the operatin button detached.Fig. 7 is a view of the ocking sleeve, detached. Fig. 8 is a side viewof the end clo sure for the locking sleeve, detached. Fig. 9 is arelatively enlarged sectional view of the upper half of the indicator,assembled.

1 represents a portion of a door.

'2 represents the casing for a dead-bolt (not shown).

3 is a bolt-operating device, of any desired construction, in thisinstance a thumb-turn.

4 is a bolt actuating spindle, in this instance having a cross sectioncorresponding in outline to a gear. This spindle is turned by the thumbturn 3.

Thus far the mechanism represents a wellknown dead-bolt of conventionalform. The

indicating mechanism comprises a casing or frame 5, which may besuitably secured to the outside of a door in any well-known manner.Projecting throu h the front of the casing 5 is a button or ger-piece 6,by the feeling of which a person'who desires to enter the room mayascertain whether the door is locked, so as to avoid the necessity ofdisturbing the occupant. In the particular form shown, if the button 6is free to be pushed in, it indicates that the door is unlocked,whereas, on the other hand, if the button 6 is held rigid, it wouldindicate with equal certainty that the'door is locked.

The construction in its preferable form is as follows: 7 is a lockingsleeve secured, for example by a screw 6*, to the rear of the button 6.The sleeve 7 has an intermediate partition to furnish a proper bearingfor the button 6 and screw 6. This sleeve 7 extends forwardly of thepartition and in this forward extension is an angular slot 9, oneportion of said slot extending longitudinally of the sleeve, the otherportion extending transversely thereof. To the rear of said partition isalso an extension which carries a closure 8. This closure may be securedin any desired way to the sleeve 7, but the preferable constructioncomprises two radial arms on the closure which extend into recesses 10in the rear edge of the sleeve 7 so that by swaging down the edges ofthe said recesses 10 (see Fig. 1) the closure will be securely connectedto the sleeve, not only so as to prevent endwise removal, but also so asto lock the plate 8 and sleeve 7 together for rotary movement.

In the central part of the closure 8 is a passage of suitable outline toreceive the end of the spindle 4 so that when the spindle is turned thesleeve 7 will be turned. The

casin or frame 5 is provided with an inward y projecting sleeve 11, theinner edge of which is turned in slightly to form an abutment for aspring 12. That part of the push button 6 within this sleeve 11 isreduced somewhat in diameter to provide a space for said spring 12. Theextreme inner end of the button 6 is preferably slabbed off to fit inthe partition in the sleeve 7 so that the screw 8 may be more firmly setdown, since by this means the parts 6 and 7 are held against independentrotation: This, however, is not essential; in fact, instead of a screw7, the inner end of the button 6 might be riveted in place back of thepartition in the sleeve.

14 is a pin carried by the frame 5 and projecting into the slot 9. Inthe particular arrangement shown, this pin 14 will stand in line withthe longitudinal extension of slot 9 when the door is unlocked (see Fig.3) with the result that under these conditions the push button 6 may bereadily pushed in against the pressure of spring 12. When,

however, the door is locked, the sleeve 7 will be turned so that the endof the pin 14 will stand in the transverse portion of slot 9 in whichposition the button 6 cannot be pressed in. Since this turning of thesleeve 7 is accomplished when the door is locked, it follows that atsuch time the button 6 will be held rigid and an outsider will know thatthe door has been locked and need not disturb the occupant of the roomby any effort to gain admittance. the button might be reversed by simplyhaving the pin stand in the transverse portion of slot 9 when the dooris unlocked, in which event when the button is rigid the door isunlocked, and when yielding it indicates that the door is locked. Thismere reversal of operation is so obvious as to require no illustration.

What we claim is:

1. In an indicator for door locks, a frame having a central tubularaperture, a push button therein, a sleeve carried at the inner end ofthe push button, said sleeve having an angular slot and a pin carried bysaid frame entering said slot, and means for connecting said push buttonwith a door locking device.

2. An indicating mechanism for a door lockin device, comprising a casehavin a centra tubular a erture, a ush button sl idable therein anguided tliereby, a spring space between said parts, a spring therein, as eeve carried by said push button, and hav- Obviously the action'of ingan angular groove therein, a pin carried by said frame and enterin saidgroove, and means for connecting said sleeve and push button to saiddoor locking mechanism.

3. An indicating mechanism for a door locking device, comprising anoperating rotatable spindle, a sleeve shdable thereon but rotatabletherewith, a push button carried by said sleeve, a frame or casesurrounding said push button, means for normally pressing said pushbutton outwardly, an extension from said sleeve having a groove therein,a

ortion of said groove being in the line of ongitudinal movement of otherportion of said groove being in the line of rotary movement of saidsleeve, and a pin carried by the frame entering said groove.

4. In an indicator for including a frame having a guide-way therein,another part including a )ush button adapted to said uide-way, sai partsbeing movable relatively to each other, one of said parts having anangular locking slot or passage, the other part having a projection orpin entering said slot, and means for connecting said push button partwith a door-locking device.

HENRY G. OIGIII. CHAS. J. CA1 iEY. Witnesses M. S. HARD, OHAs. E.RUssELL.

the button, an-

door locks, one part

